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1.5 Science Instrument Performance
The science instrument performance in two-gyro mode is nearly indistinguishable from the science instrument performance in three-gyro mode. Refer to the appropriate Instrument Handbooks for information regarding the detailed on-orbit performance capabilities of the HST science instruments. Additional information about the performance in two-gyro mode can be found in the Instrument Science Reports listed below.
Instrument Science Reports
Characterization of the ACS/HRC PSF in Two-Gyro Mode, (ACS ISR 2006-08), by M. Sirianni et al.
http://www.stsci.edu/hst/acs/documents/isrs/isr0608.pdf
Two-Gyro Pointing Stability of HST Measured with ACS, (ACS ISR 2005-07), by A. Koekemoer, V. Kozhurina-Platais, A. Riess, M. Sirianni, J. Biretta, & C. Pavlovsky
http://www.stsci.edu/hst/acs/documents/isrs/isr0507.pdf
ACS Coronagraph Performance in Two-Gyro Mode, (ACS ISR 2005-05), by C. Cox & J. Biretta
http://www.stsci.edu/hst/acs/documents/isrs/isr0505.pdf
NICMOS Two-Gyro Mode Coronagraphic Performance, (NICMOS ISR 2005-001), by G. Schneider, A.B. Schultz, S. Malhotra, & I. Dashevsky
http://www.stsci.edu/hst/nicmos/documents/isrs/isr_2005_001.pdf
The FGS Astrometry in the Feb. 2005 On-Orbit Two-Gyro Mode Test, (FGS ISR 2005-01), by E. Nelan
http://www.stsci.edu/HST_overview/TwoGyroMode/documents/FGS.pdf
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